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Exclusive OR Gate
The name exclusive OR Gate is usually shortened to XOR gate. The XOR gate can be obtained by using OR, AND and NOT gates as shown in Fig (a).
 Fig (a) Fig (b)
Inputs Outputs
A
B
OR
XOR
0
0
0
0
1
0
1
1
0
1
1
1
1
1
1
0
Truth Table of XOR
Shows the truth table for XOR gate. The table shows that the output is HIGH (1) if any but not all of the inputs are High (1).This exclusive feature eliminates the similarly to the OR gate. The OR gate truth table is also given so that you can compare the OR gate truth table with XOR gate truth table. The logic symbol for XOR gate is shown in Fig. (b). Note that the symbol is similar to that of OR gate except for the additional curved line at the input side.
The Logic operations in the circuit are as under:
A
B
. B = Y'
A . = Y"
Y = Y' + Y"
0
0
1
1
0
0
0
1
0
0
1
0
1
1
0
1
1
0
1
0
1
1
1
0
0
0
0
0
Note that 0 ANDed with 1 is 0 and AND with 1 is 1.